All 169 pages of this Yanmar Crawler Backhoe Parts Catalog (OEM #Y00K2471) are organized around one job: putting the right part number in your hand for the B37-P, B37-PR, B37-C, and B37-CR. You get exploded-view diagrams covering every assembly from the control valve and turning motor to the driving motor, boom cylinders, and bucket attachments. Inside: a full hydraulic oil piping section with connector, flange, and O-ring part numbers; cab and canopy electrical harness breakdowns; and a dedicated crawler assembly with link, pin, shoe, and master components listed by OEM number. The B37-P and B37-C travel at 4.1 km/hr high and 2.1 km/hr low; ground pressure on your pad is 0.246 kg/cm². Stop hunting part numbers across forum threads. Bookmarked by system, searchable by keyword; open it on your tablet, pull the number, and order the part.
What's Inside This Yanmar B37-P / PR / C / CR Series Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Specifications | 1 | Overall Dimensions, Bucket Capacity, Digging Depth, Turning Radius, Operating Weight |
| Label (Cabin) | 3-8 | Set, Specification, Oil/Water, Stripe |
| Tool, Tool Box & Manual Case | 13-14 | Tool Assy, Nozzle, Wrench Set, Grease Gun, Tool Bag |
| Muffler | 15-16 | Flange, Exhaust Pipe, Stay, Gasket, Clamp |
| Air Cleaner | 17-18 | Hose Suction, Duct Seal, Cleaner Assy, Element, Clamp |
| Accelerator | 19-20 | Lever, Support, Cable, Plate, Joint |
| Engine Mount | 21-22 | Absorber, Bed, Support, Bracket, Stopper |
| Radiator & Mount | 23-24 | Radiator, Hose, Clamp, Shroud, Sub-Tank |
| Fuel Tank & Fuel Line | 25-26 | Fuel Tank Assy, Cock, Float, Gauge, Strainer |
| Battery | 27-28 | Cord, Retainer, Rod, Cover, Spring Washer |
| Electric Part (Cabin, Canopy) | 29-32 | Harness, Clamp, Switch, Lamp, Buzzer, Fuse Box |
| Work Lamp | 33-34 | Heater Assy, Valve, Seat, Hose, Defroster |
| Heater & Defroster | 35-36 | Radio Assy, Band, Bracket, Speaker, Antenna |
| Crawler | 41-42 | Assy, Link, Pin, Shoe, Master |
| Control Equip. (Lever Stand) | 43-44 | Pedal, Shaft, Rod Assy, Pad, Spool Link |
| Hyd. Oil Piping (Tank-Pump-Valve) | 131-132 | Connector, Flange, Elbow, O-Ring, Adapter |
| Greasing | 149-150 | Boom W/BUSH, Pin Bush, Shim Set, Nipple, Cotter Pin |
| Boom & Arm | 151-152 | Bucket Assy, Teeth Assy, Side Cutter, Pin Kit, Shim Set |
| Bucket (Attachment) | 153-166 | Assy, Teeth, Side Cutter, Pin Kit, Shim Set |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Boom swing angle | 50R & 90L | p. 1 |
| Climbing ability | 30 | p. 6 |
| Blade Width x height | 1520 x 350 mm | p. 1 |
| B37-P, B37-C | ||
| Traveling speeds (high-low) | 4.1-2.1 km/hr | p. 1 |
| B37-PR, B37-CR | ||
| Traveling speeds (high-low) | 4.5-2.3 km/hr | p. 1 |
| B37-P, B37-PR, B37-C | ||
| Distributed weight | 0.246 kg/cm² | p. 1 |
Yanmar B37-P / PR / C / CR Series Common Problems This Manual Covers
Need to replace Yanmar B37 track rollers and idlers due to repeated derailment and rough ride p. 41
Inspect the exploded view on page 41 to identify the correct track assembly components. Locate the specific part numbers for the worn rollers and idler links. Verify the replacement parts support the machine's 30 degree climbing ability listed in the spec table.
Manual Section: CrawlerLocating replacement seal kits and bearings for a leaking hydraulic pump making a loud whining noise p. 131
Review the hydraulic parts diagram on page 131 to find the pump assembly exploded view. Match the O-ring and flange adapter part numbers to your pump housing. Ensure the new seals can handle the system pressure needed for the 50R & 90L boom swing angle.
Manual Section: Hyd. Oil Piping (Tank-Pump-Valve)Finding correct pin kits and shim sets for a loose boom and arm connection with excessive play p. 151
Examine the parts diagram on page 151 to identify the correct pin bush and shim set numbers. Match the replacement boom pins to your specific machine variant. Confirm the overall machine specs match the standard 1520 x 350 mm blade width configuration before ordering.
Manual Section: Boom & ArmIdentifying replacement teeth and side cutters for a worn bucket struggling to dig through hard clay p. 153
Search the bucket and attachment parts diagram on page 153 for the bucket assembly breakdown. Find the exact part numbers for the teeth assembly, side cutters, and pin kits. Ensure the new attachments maintain the correct digging depth for the 0.246 kg/cm² distributed weight models.
Manual Section: Bucket (Attachment)Frequently Asked Questions
How do you fix need to replace Yanmar B37 track rollers and idlers due to repeated derailment and rough ride?
Inspect the exploded view on page 41 to identify the correct track assembly components. Locate the specific part numbers for the worn rollers and idler links. Verify the replacement parts support the machine's 30 degree climbing ability listed in the spec table.
How do you fix locating replacement seal kits and bearings for a leaking hydraulic pump making a loud whining noise?
Review the hydraulic pump assembly exploded view on page 131 to find the exact pump assembly breakdown. Match the O-ring and flange adapter part numbers to your pump housing. Ensure the new seals can handle the system pressure needed for the 50R & 90L boom swing angle.
How do you fix a loose boom and arm connection with excessive play needing pin kits and shim sets?
Examine the parts diagram on page 151 to identify the correct pin bush and shim set numbers. Match the replacement boom pins to your specific machine variant. Confirm the overall machine specs match the standard 1520 x 350 mm blade width configuration before ordering.
Where do I find the correct control valve spool and linkage part numbers for a sluggish or non-responsive hydraulic control?
Turn to the Control Equipment section starting at page 43 for the lever stand, pedal, shaft, rod assembly, pad, and spool link part numbers. The exploded-view diagram shows each spool link individually by OEM number so you can order the exact worn component without replacing the full valve assembly.
What crawler undercarriage part numbers cover the B37-P, B37-PR, B37-C, and B37-CR variants?
The Crawler section on page 41-42 lists link assembly, pin, shoe, and master components broken out by OEM number. All four B37 family variants (P, PR, C, CR) share the same undercarriage layout; verify the shoe width and pin size match your unit's spec before ordering replacement crawler components.
How do I identify replacement bucket teeth, side cutters, and pin kits for a worn bucket struggling to dig through hard clay?
Search the bucket and attachment parts diagram starting at page 153 for the complete bucket assembly breakdown. Find the exact part numbers for the teeth assembly, side cutters, and pin kits. Ensure the new attachments maintain the correct digging depth for the 0.246 kg/cm² distributed weight models.
Document Quality
This document is a scanned PDF, not a native digital file. It includes an OCR layer, so you can search and copy text throughout the entire document. The text quality is generally crisp and easy to read, with only minor fuzziness on some smaller numbers in tables. Diagrams and illustrations are raster images, but labels within them are consistently readable. All pages are clean with no notable scan artifacts, stains, or skewed content.
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